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Finding the Fourth Proportional to 102,625.68, 153,967.68 and 72,357.60

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Solution

The fourth proportional to 102,625.68, 153,967.68 and 72,357.60 is: 108,556.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,625.68 : 153,967.68 = 72,357.60 : x
  2. Step 2: Convert to fraction form
    102,625.68/153,967.68 = 72,357.60/x
  3. Step 3: Cross multiply
    102,625.68x = 153,967.68 × 72,357.60
  4. Step 4: Simplify right side
    102,625.68x = 11,140,731,802.37
  5. Step 5: Solve for x
    x = 11,140,731,802.37/102,625.68
  6. Step 6: Final answer
    x = 108,556.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.